MHS Boilers REGENCY 2 Series Instruction Manual

GUIDE TO INSTALLATION
SERVICE & CLEANING
REGENCY2
LOW PROFILE
L 111

2
REGENCY2
LOW PROFILE
contents
page section
3 . . . . . . . . . . . 1.0 Conformity Statement
Installation Requirements
4 . . . . . . . . . . . 1.1 Gas Safety (Installation and Use) Regulations
General Remark
1.2 Boiler Models
5 . . . . . . . . . . . 1.3 Dimensional Data
6 . . . . . . . . . . . 2.0 Technical Data
7 . . . . . . . . . . . 2.1 Gas Inlet Pressure (mbar)
Burner Setting Pressure (mbar)
Size of Burner Injector (mm)
Size of Diaphragm (mm)
8 . . . . . . . . . . . 3.0 Installation and Operation Instructions
3.1 Gas Supply
9 . . . . . . . . . . . 3.2 Flue System
3.3 Air Supply
Air Supply by Natural Ventilation
10 . . . . . . . . . . . . Air Supply by Natural Ventilation (contd)
Air Supply by Mechanical Ventilation
11 . . . . . . . . . . 3.4 Gas Connection
3.5 Water Connection
System Water Treatment
12 . . . . . . . . . . 3.6 Electrical Supply and Connection
Control Panels and Electrical Connection
Legend of Control Panel Components
13 . . . . . . . . . . . . G100 (30, 40, 50, 50IE) CC147 Control Panels
14 . . . . . . . . . . . . G100 (70IE) CC148 Control Panels
15 . . . . . . . . . . . . G100 (90+110IE) CC149 Control Panels
16-17 . . . . . . . . 3.7 Final Boiler Assembly
18 . . . . . . . . . . 4.0 Commissioning Testing
19 . . . . . . . . . . 4.1 Atmospheric Boiler Service
& Commissioning Report
20-21 . . . . . . . . 5.0 Boiler Servicing
22 . . . . . . . . . . 6.0 Fault Finding
23 . . . . . . . . . . 7.0 Spares List

3
REGENCY2
LOW PROFILE
1.0 general
These instructions are designed to assist the installation and servicing engineer with the installation and
maintenance of the Regency 2/G100IE series central heating boilers.
These atmospheric gas fired boilers are floor standing and suitable for heating large dwellings,
commercial or industrial buildings. They are designed for use on pumped circulation systems, hot water
production through calorifiers, indirect cylinders, plate heat exchangers or any other indirect method of hot
water generation.
The Regency 2 G100IE series boilers, are open flued, low profile, natural draught central heating
appliances, with outputs ranging from 32 to 126 kW.
Models G100IE are fully automatic spark ignited appliances with flame safeguard via flame ionisation.
Models G100/90IE and G100/110IE are two stage high/low firing appliances.
conformity statement
Regency 2 boilers are manufactured to the highest standard of quality, performance and safety, in
accordance with EC standards. The Regency 2 boilers carry the CE mark.
installation requirements
The installation of Regency 2 boilers must be in accordance with the relevant requirements of Gas
Safety (Installation and Use) Regulations 1994, Health & Safety at Work Act, Building Regulations, I.E.E.
Regulations, Construction (Design & Management) Regulations 1994, Local Authority Bye-Laws, Local and
National Water Bye-Laws, Fire Authority Regulations and Insurance Company requirements.
The following Codes of Practice are also applicable:-
• BS6798: 1987 Specification for installation of gas fired hot water boilers of rated input not
exceeding 60kW.
• BS6880 Code of Practice for low temperature, hot water heating systems of output greater than
45kW. Parts 1, 2 and 3: 1988.
• CP342 Part 2: 1974 Code of Practice for centralised hot water supply.
• BS6644 1991 specification for gas fired hot water boilers of rated inputs between 60 kW and 2 MW.
• IGE/UP/2 Gas installation pipework, boosters and compressors on industrial and commercial
premises.
• CIBSE Guide Reference sections B7, B11 and B13.
• BS5440 Installation of flues and ventilation for gas appliances of rated input not exceeding 60kW.
Part 1: 1990 Specification for the installation of flues.
• BS5440-2: 2000 Installation and maintenance of flues and ventilation for gas appliances of rated input
not exceeding 70kW net (1st, 2nd and 3rd family gases) Part 2: Specification for installation and
maintenance of ventilation for gas appliances.
• British Gas IM/11 Flues for commercial industrial gas fired boilers and air heaters.

4
REGENCY2
LOW PROFILE
gas safety (installation and use) regulation
It is the law that all gas appliances are installed by competent persons - ie: CORGI Registered, in
accordance with the above Regulations.
Failure to comply with Regulations could lead to prosecution. It is in your own interest and that of
safety, to ensure that the law is complied with.
location
The location chosen for the boiler must permit the provision of a satisfactory flue and adequate space
for servicing and air circulation around the boiler. The boiler room, whether specifically constructed or a
modification of an existing space, should be designed in accordance with BS6644. The boiler house must
be kept clean and the boilers must not be permitted to operate during the installation of lagging materials
or during dust making operations.
Boiler Model
G100/30IE
G100/40IE
G100/50IE
G100/70IE
G100/90IE
G100/110IE
kW
32.7
44.4
56.2
80
103
126
Btu/h
111,572
151,493
191,754
272,960
351,436
429,912
Nominal
Heat Output
1.1 general
remark
The Regency 2 series are gas fired cast iron sectional boilers whose features are high efficiency; low
emissions and compact dimensions. The heat exchanger comprises:-
•one front section
•a variable number of intermediate sections
•one rear section
connected to each other, by means of bi-conical nipples. The boiler is fitted with a multi bar
atmospheric gas burner made in stainless steel, for operation with natural gas, Lpg and town gas.
1.2 boiler
models

5
REGENCY2
LOW PROFILE
1.3 dimensional data
clearances
Models
A - Boiler Height - mm
B - Boiler Depth - mm
C - Boiler Rear/Centre Flue - mm
D - Flue Outlet Size - mm
E - Casing Depth - mm
F - Front Clearance - mm
G - Gas Connection Size - BSP
H - Side to Flue - mm
I - Side to Flue - mm
Flow Connection - BSP F
Return Connection - BSP
G - Gas Connection Size - BSP Towns Gas
G100/30 IE
850
918
113
155
638
450
1/2"
255
295
2"
1"M
3/4"
G100/40 IE
850
1026
113
155
725
450
1/2"
255
295
2"
1"M
1"
G100/50 IE
953
1084
120
202
812
450
1/2"
275
275
2"
1"M
1"
G100/70 IE
953
1260
120
202
986
450
3/4"
275
275
2"
2"F
11/2"
G100/90 IE
1005
1483
144
254
1160
600
1"
275
275
2"
2"F
11/2"
G100/110 IE
1005
1659
144
254
1334
700
1"
275
275
2"
2"F
11/2"
550
A
625
450
(Recommended)
150
(Minimum)
F
B
C
450
(Minimum)
HI
Flow
332/345
77
147
70
671
Dimensions in millimetres
E
G
Return
326
Drain
154
49
Dø
63

2.0 technical
data
6
REGENCY2
LOW PROFILE
Module size G100 30 IE 40 IE 50 IE 70 IE 90 IE 110 IE
Heat Output kW 32.7 44.4 56.2 80 103 126
to Water Max Btu/h 111,572 151,492 191,754 272,960 351,436 429,912
Low Fire Output kW ————51.5 63
Btu/h ————175,718 214,956
Heat Input Gross kW 39.98 54.17 68.34 96.76 124.30 151.90
Btu/h 136,443 184,853 233,208 330,151 424,140 518,285
Water L 14.4 18.0 21.6 28.8 36.0 43.2
Content UK Gal 3.16 3.95 4.75 6.33 7.91 9.50
Design Flow Rate at L/sec 0.70 0.96 1.21 1.73 2.22 2.72
∆t 11°C UK Gal/min 9.34 12.68 16.05 22.85 29.42 36.00
Waterside Pressure m bar 7.4 10.2 14.0 18.0 20.5 22.5
Drop at ∆t 11°C in wg 2.91 4.0 5.5 7.08 8.07 8.85
Minimum Flow Rate L/sec 0.38 0.52 0.66 0.95 1.22 1.5
at ∆t 20°C UK Gal/min 5.13 6.97 8.83 12.56 16.18 19.79
Maximum Water bar 5.0 5.0 5.0 5.0 5.0 5.0
Pressure psi 72.5 72.5 72.5 72.5 72.5 72.5
Factory Test bar 10 10 10 10 10 10
Pressure psi 145 145 145 145 145 145
Input Rate m3/h 3.73 5.05 6.38 9.03 11.60 14.17
Nat Gas G20 ft3/h 131.82 178.60 225.32 318.98 409.79 500.75
Nominal Gas Inlet m bar 20.0 20.0 20.0 20.0 20.0 20.0
Pressure Nat Gas in wg 8.0 8.0 8.0 8.0 8.0 8.0
Burner Setting m bar 11.0 11.0 12.4 11.1 11.0 10.9
Pressure Nat Gas in wg 4.33 4.33 4.88 4.37 4.33 4.29
Approx Flue Gas Volume m3/h 49.60 67.34 85.23 121.34 156.22 191.11
at NTP (primary flue) Nat Gas ft3/h 1751 2378 3010 4285 5516 6749
Approx Flue Gas °C 230 230 230 230 230 230
Temp (primary flue) °F 446 446 446 446 446 446
Flow Connection in BSPF 2" 2" 2" 2" 2" 2"
Return Connection in BSP 1"M 1"M 1"M 2"F 2"F 2"F
Gas Connection Nat Gas in BSP M 1/2"1/2"1/2"3/4"1" 1"
Draught Diverter mm 155 155 202 202 254 254
Connection Size in 6.10 6.10 8.00 8.00 10.00 10.00
Weight kg 132 161 191 248 305 361
lbs 291 354 421 546 672 795
Electrical Supply 240V 50Hz Single phase
Number of Sections 45681012
Number of Burners 333333
Water DetailsGas DetailsConnection Sizes

7
REGENCY2
LOW PROFILE
2.1 technical
data
Town Gas G110
8
Nat Gas G20
20
Butane Gas G30
28-30
Propane Gas G31
37
Boiler Model
G100/30IE
G100/40IE
G100/50IE
G100/70IE
G100/90IE
G100/110IE
Nat Gas G20
11
11
12.4
11.1
11
10.9
Butane Gas G30
26.3
27.5
26.02
26.1
23.5
22.65
Propane Gas G31
33.6
35.1
33.2
33.3
30
28.9
Boiler Model
G100/30IE
G100/40IE
G100/50IE
G100/70IE
G100/90IE
G100/110IE
Nat Gas
2.95
3.4
3.8
4.5
5.1
5.8
Lpg
1.82
2.1
2.35
2.75
3.2
3.7
Boiler Model
G100/30IE
G100/40IE
G100/50IE
G100/70IE
G100/90IE
G100/110IE
Nat Gas
-
-
-
-
6.5 / - *
7.5 / - *
Lpg
8
-
10.3
-
4.7 / 9.5 *
5.3 / 11 *
1st Valve / 2nd Valve *
Boiler Model
G100/30GN
G100/40GN
G100/50GN
G100/70GN
G100/90GN
G100/110GN
Injector
5.8
6.25
7.5
10
10.9
12.6
Burner Setting
mbar
3.5
4.5
3.5
2.7
4.0
4.0
Size of Burner Injector (mm)
Size of Pilot Injector (mm)
Town Gas
2 x 0.55
a. gas inlet pressure (mbar)
b. burner setting pressure (mbar)
c. size of burner injector (mm)
d. size of diaphragm (mm)
Town gas only available on Piezo/Permanent pilot ignition G100 boilers.
Note
Data 2.1 a, b & c above is relevant only to appliances with standard burner assembly. For boilers
equipped with optional low NOx burners, refer to data supplied separately with burner kit.

8
REGENCY2
LOW PROFILE
3.0 installation and
operating instructions
Siting of the boiler should be such that adequate space is provided at the front of the unit to facilitate
the withdrawal of the burner bars during servicing. Sufficient headroom over the boiler should be allowed
to facilitate servicing with a minimum requirement of 1000mm.
Allow minimum of 25mm at sides of boiler for assembly.
Boiler Model
G100/30IE
G100/40IE
G100/50IE
G100/70IE
G100/90IE
G100/110IE
"A" Rear
450mm
450mm
450mm
450mm
450mm
450mm
"B" Front
450mm
450mm
450mm
450mm
600mm
700mm
BA
The boiler is delivered on a wooden pallet and covered by a polythene envelope. It is supplied
complete with casing, fascia and draught diverter in a separate box. The opening around this draught
diverter must not be restricted in any way (i.e. boxing in boiler in alcove, etc.)
The boiler should be mounted on a level base of non-combustible material. A split collar should be
fitted immediately above the draught diverter to allow boiler removal.
3.1 gas
supply
The availability of an adequate gas supply or the suitability of an existing supply and metering equipment
should be established by reference to the Local Gas Undertaking before installation. Gas supply pipework
should be fitted in accordance with IGE/UP/2. Do not use pipes of a smaller size than the boiler
connection.

Detailed recommendations of the flue are shown in BS6644, BS5440 and IM/11. The following notes
are intended for guidance only.
The area of the flue serving the boiler, must not be less than the area of the boiler flue outlet. Nominal
flue pipe diameters between the boiler and chimney should be in accordance with the following table:-
9
REGENCY2
LOW PROFILE
3.2 flue
system
Flue pipes and fittings should be constructed from aluminium, stainless steel or suitable flue material.
Any double walled flue pipe must be acceptable to current regulations. Chimneys should be lined with non-
porous acid resistant material in accordance with BS5854, such as stainless steel flexible flue liner or a
similar approved material. The internal diameter of the liner must not be less than the recommended flue
pipe and the number of joints should be kept to a minimum. Any joints between the flexible liner and the
flue pipe from the boiler, should be effected by means of a purpose built adaptor plate.
Existing flues should be thoroughly swept before use and any register plates or dampers should be
removed. The flue should be fitted with a approved terminal on boiler sizes G100, G100/30IE and
G100/40IE. On boiler sizes G100/50IE, G100/70IE, G100/90IE and G100/110IE, the flue outlet should
be fitted with a wire mesh to protect against blockage. The terminal should not be sited adjacent to any
opening window, air vent or other ventilation opening and should be situated at least 1m above the roof
surface. All should be in accordance with BS6644 or BS5440 as appropriate.
Boiler Model
G100/30IE
G100/40IE
G100/50IE
G100/70IE
G100/90IE
G100/110IE
Diameter (mm)
155
155
202
202
254
254
Diameter (in)
6
6
8
8
10
10
Detailed recommendations for air supply are given in BS6644 or BS5440 as appropriate. The following
notes are given as guidance.
air supply by natural ventilation
The purpose built space housing the boiler(s), must have permanent air vents communicating directly
with the outside air at high level and at low level. Where communications with the outside air is possible
only by means of high level air vents, ducting down to floor level for the lower vents(s) should be used. For
an exposed boiler house, air vents should be fitted, preferably on all four sides, but at least on two sides.
Air vents should have negligible resistance and must not be sited in any position where they are likely to be
easily blocked or flooded or in any position adjacent to an extraction system, which is carrying inflammable
vapour.
3.3 air
supply

10
REGENCY2
LOW PROFILE
air supply by natural ventilation (contd)
Grilles or louvres should be designed so that high velocity air streams do not occur within the space
housing the boiler(s).
The air supply requirements stated below are related to the maximum rated heat INPUT of the
boiler(s) and are equivalent to those specified in BS6644 or BS5440 as appropriate.
air supply by mechanical ventilation
Mechanical ventilation systems serving the area containing the boiler should be designed with a supply
rate of 1.1m3/sec. per 1000 kW of total rated input extraction air rate of 0.45 m3/sec. per 1000kW total
rated input. Systems employing an extract fan only, must not be used.
a) Using a fan to supply air to a low level opening with natural discharge through a high level opening.
b) Using a fan to supply air to a low level opening and a fan to extract air at a high level opening.
All air inlet and extract fans should be electrically interlocked to cause safety shut-down or lock-out of
the boiler in the event of malfunction of either fan.
The requirements of mechanical ventilation schemes is fully outlined in BS6644.
The actual minimum effective areas of the air vents required for boilers installed in a room or internal
space are as follows:-
Boiler Model
G100/30IE
G100/40IE
G100/50IE
G100/70IE
G100/90IE
G100/110IE
Position of Air Vent
See BS 5440
Part 2
See BS 5440
Part 2
See BS 5440
Part 2
High Level
Low Level
High Level
Low Level
High Level
Low Level
Air Vent Area (air direct from outside)
143cm2per boiler
204cm2per boiler
267cm2per boiler
353cm2per boiler
706cm2per boiler
414cm2per boiler
828cm2per boiler
478cm2per boiler
955cm2per boiler
Total Input of
Boiler Installation
Up to 2MW
(6,824,000 Btu/h)
Position of
Air Vent(s)
High Level
(outlet)
Low Level
(inlet)
Air Vent Area
(air direct from outside)
270cm2plus 2.25cm2 per
kilowatt in excess of 60kW
total rated input
540cm2plus 4.5cm2 per
kilowatt in excess of 60kW
total rated input
For compartment ventilation, refer to relevant standard.

11
REGENCY2
LOW PROFILE
The following table gives the minimum mechanical ventilation rates for the Regency 2 range of boilers:-
Boiler Model
G100/30IE
G100/40IE
G100/50IE
G100/70IE
G100/90IE
G100/110IE
Inlet Air (Combustion Ventilation)
0.044m3/sec
0.059m3/sec
0.075m3/sec
0.106m3/sec
0.136m3/sec
0.167m3/sec
Extract Air (Ventilation)
0.018m3/sec
0.024m3/sec
0.030m3/sec
0.043m3/sec
0.055m3/sec
0.068m3/sec
3.4 gas
connection
The gas inlet connection at the rear of the boiler terminates with a BSP male tapered thread. A gas cock
(supplied separately in a plastic bag) should be fitted between this point and the gas supply in an easily
accessible position to facilitate servicing.
3.5 water
connection
All Regency 2 boilers are provided with flow and return connections at the rear of the boiler. The
connection pipework should incorporate unions to allow easy disconnection of the boiler.
system water treatment
In almost all heating and indirect hot water systems, there is a need to treat the circulating water,
particularly where the system type is open-vented. The fill water will almost always produce a scale deposit
on the waterways of the boiler. This deposit will reduce the heat transfer capabilities of the boiler by
insulating the metal of the heat exchanger from the system water. Water loss from the system is inevitable
even when there is no obvious leakage. This is caused by surface evaporation from the feed tank. Over a
heating season, water replenishment can be considerable. Make up water will, naturally, contribute to scale
formation in the boiler. The rise and fall of water levels through expansion and contraction of the water on
heating and cooling, allows dissolved oxygen to be drawn continuously into the system promoting
corrosion.
Corrosion debris can be carried into and laid down in the boiler, increasing the potential for fouling
which will severely reduce boiler efficiency and can lead to premature boiler failure. It is for this reason that
MHS Boilers Limited, strongly recommends correct treatment of the system fill water, after proper initial
system cleansing and flushing with an ongoing system maintenance program.
For specific guidance on water treatment, direct contact is advisable with:-
Betz Dearborn Limited Fernox
Widnes Tandem House
Cheshire Marlowe Way
WA8 8UD Croydon
Surrey
Telephone: [phone] CR0 4XS
Telephone: [phone]

12
REGENCY2
LOW PROFILE
legend of control panel components
A Power On Lamp
B Pump Run Lamp
C High Limit Lamp
D Pump Run On Timer (Eberle Type)
E Boiler Run Lamp
F Gas Valve Connections
G External Controls Contacts (volt free) High/Low
H Reset
I Lockout Lamp
J Boiler Pump
K High Fire Lamp
L Remote Overheat Trip Indicator Lamp
M Remote Burner Lockout Indicator Lamp
N External Clock (motor)
O1 & O2 Gas Valves
P Control Box
Q Ignition Probe
R On/Off Switch
S Detection Probe
T Flue Limit Thermostat
T.R.I. Control Thermostat
T.R.II. High/Low Thermostat
T.S. Limit Thermostat
X Cable + PLUG Connections
Y External Controls Contacts (volt free) On/Off
Denotes Field Wiring by Installer
Note: Configuration of BMS relays subject to alteration without notice.
3 way relay boards supplied when all BMS outputs are required.
3.6 electrical supply
& connection
The boiler requires a 230 volts 50Hz Ac electrical supply - fuse rating is 5 amps: preferably by means
of un-switched shuttered socket outlet in conjunction with a fused three pin plug, both complying with the
requirements of BS1363. Alternatively, a fused double pole switch or fused spur box connection to the
mains, should be readily accessible and adjacent to the boiler.
The boiler should be connected using heat resisting cable. The method of cable entry should be from
the rear left hand side of the boiler with the cables being retained in the cable tray/bracket attached to the
side of the panel.
All wiring external to the boiler must be installed in accordance with the latest and current I.E.E. and
Local Authority Regulations.
control panels and electrical connection
There are a number of differing control panels which are supplied with the Regency2 range of boilers.
Please refer to the following list for the correct matching of control fascia for the chosen boiler.
Boiler Model Fully Automatic Versions
G100, 30, 40, 50IE
G100/70IE
G100/90, 110IE
Control Panel Type
CC 147
CC 148
CC 149

13
REGENCY2
LOW PROFILE
220/230V
50Hz LN
N
L
H
A
BC
C2
1
C2
1
C
1
T.S.
T.R.I. T E
12345
F
P
Q
SO
X
678
1112 10 9 8 7 6 5 4
I
5
4
3
2
1
R
N 3 4 5 6 7 8 9 10 111213141516
L
N
Y
JLM
2
1D 5427
Regency 2
G100 (30, 40, 50IE) CC147
220/230V
50Hz LN
N
L
H
A
BC
C2
1
C2
1
C
1
T.S.
T.R.I. T E
12345
F
P
Q
SO
X
678
1112 10 9 8 7 6 5 4
I
5
4
3
2
1
R
N 3 4 5 6 7 8 9 10 111213141516
L
N
Y
J
2
A N A1 A2 C N A5 A6 B N A3 A4
Limit
Flue/Water Temperature Limit
Run
Run
Volt Free
Lockout
Lockout
1D 5427
Regency 2 (BMS Relay)
G100 (30, 40, 50IE) CC147

REGENCY2
LOW PROFILE
220/230V
50Hz LN
N
L
H
A
BC
C2
1
C2
1
T.S.
T.R.1.
E
12345
F
P
O
Q
S
X
678
2134510 13 14 16 11 12
I
5
4
3
2
1
R
N 3 4 5 6 7 8 9 10 111213141516
L
N
Y
M
JL
1D 5427
Regency 2
G100 (70IE) CC148
220/230V
50Hz LN
N
L
H
A
BC
C2
1
C2
1
T.S.
T.R.1.
E
12345
F
P
O
Q
S
X
678
2134510 13 14 16 11 12
I
5
4
3
2
1
R
N 3 4 5 6 7 8 9 10 111213141516
L
N
Y
JLimit
Limit / Water Temperature Limit
Run
Run
Volt Free
Lockout
Lockout
A N A1 A2 C N A5 A6 B N A3 A4
1D 5427
Regency 2 (BMS Relay)
G100 (70IE) CC148
14

REGENCY2
LOW PROFILE
220/230V
50Hz
LN
N
L
H
A
B
C
E
K
C2
1
C2
1
C1
T.S.
T.R.1. T.R.11.
12345
F
X
678
I
5
4
3
2
1
R
N 3 4 5 6 7 8 9 10 11121314
L
N
Y
G
JL M
2
P
O1 O2
Q
S
2134510 13 14 16 11 12
1D 5427
Regency 2
G100 (90+110IE) CC149
Limit
Limit / Water Temperature Limit
Run
Run
Volt Free
Lockout
Lockout
220/230V
50Hz
LN
N
L
H
A
B
C
E
K
C2
1
C2
1
C1
T.S.
T.R.1. T.R.11.
12345
F
X
678
I
5
4
3
2
1
R
N 3 4 5 6 7 8 9 10 11121314
L
N
Y
G
J
2
P
O1 O2
Q
S
2134510 13 14 16 11 12
A N A1 A2 C N A5 A6 B N A3 A4
1D 5427
Regency 2 (BMS Relay)
G100 (90+110IE) CC149
15

16
REGENCY2
LOW PROFILE
Position the boiler onto a level fire proof base, capable of supporting the weight of the boiler when full of
water.
Make the flow and return connections tapping 1 and 2: Fig. 1.
Install a drain cock into the 3/4”drain port (No. 3 Fig. 1.)
The return connections on the G100/30IE-50IE boilers have a 2”x 1”cone, whilst G100/90 - 110IE, are
equipped with a 2”x 2”distributor.
Install the non return valve for the pressure gauge (packed with the control panel) into the port
(No. 4. Fig. 2.) on the front section of the boiler.
Fill, test and flush, then re-fill the system. (maximum 5 bar), checking for and ensuring no water leaks.
Rest the smoke hood (No. 5. Fig. 2.) on the boiler and secure it to the front and back sections by means
of the nuts and bolts provided - (use M8 x 25).
Flue outlet located to the back.
Position the boiler insulating blanket around the boiler body hold in place with ties supplied ensuring that
the apertures in the fixing points and the blanket overlaps the front of the boiler. Fasten the front bracket
casing (No. 6. Fig. 3.) to the front section with 2 x M8 x 10mm screws through the top locating holes.
Use M12 nut and washer to secure the bracket to the bottom right hand side (No. 7. Fig. 3.) and with M8
nut and washer, fasten the front casing to the spacer which has previously been screwed to the left
(No. 8. Fig. 3.), through the lower left hand side.
Fasten the side bracket/casing supports to the top of the back section by means of M8 x 20mm bolts. The
angles should face inwards and the slotted hole to the right. (See No. 9. Fig. 1.) Secure the other side
bracket to the holes in the back section using M8 x 40mm bolts. The angles should face inwards and the
slotted hole to the right. (See No. 10. Fig. 1.)
Hang the side panels using the support pin on the front of the side panels, locating into the hole on the
front casing bracket.
Locate the hook at the rear of the side panel on to the brackets mounted on the rear section. Fix side
covers in place with wing screws located bottom front left and right hand sides.
Hang the control panel on the two cut-outs at the top of the side panels. Insert the thermostat and
thermometer probes through the slotted hole (see No. 12. Fig. 3.) in the top left hand side of the front
bracket casing.
Screw the pressure gauge into the non return assembly (previously installed) (See No. 4. Fig. 2.)
Insert the thermostat bulb (two on the G100/90 and 110IE) and the safety limit thermostat bulbs into the
pocket, in the back section and fasten the capillaries with the clip provided for this purpose.
Note: The water temperature thermometer bulb (smallest bulb) must be inserted first and located
centrally and pushed carefully to the base of the pocket (See No. 4. Fig. 3.)
On the G100, 30, 40 and 50 boilers, a flue spillage detection thermostat is fitted. Locate the bulb and
capillary of the detection stat along the left hand side of the boiler and secure the bulb into the cradles
provided in the rear of the draught diverter skirt. (See No. 2. Fig. 4.)
Note: The cables can be run down the left hand side of the boiler via the cable glands. Once all the cables
are in place, put the top panel in place. Secure via 2 self tapping screws at the rear of the boiler casing.
Connect the gas valve lead plugs to the corresponding socket in the under side of the control fascia. Mount
the rear casing engaging the hooks on the rear panel into the slots in the rear edges of the side panels.
3.7 final boiler
assembly

17
REGENCY2
LOW PROFILE
fig.1
fig.2
fig.3 fig.4
1
9
5
10
2
3
5
4
12
4
8
6
7
3
12

18
REGENCY2
LOW PROFILE
Ensure that the boiler is full of water and the system, boiler is fully vented.
Ensure that the pressure gauge on the boiler control panel reads a minimum of 0.5 bar (5m).
Ensure that an adequate gas supply is available at a working inlet pressure of 20mbar (Nat gas only) and
that the gas supply has been properly tested and purged in accordance with current Codes of Practice.
Ensure that the system pumps are running and water is circulating around the system.
fully automatic versions - G100/30-110IE
1. Switch on the on/off switch and ensure that the “green”power on indicator lamp illuminates.
2. Ensure that the external controls are calling for heat and that the “amber”“pump run”indicator lamp
illuminates and that the boiler pump (if fitted) is rotating correctly.
3. The spark ignitor should start after a short delay the burner should ignite and the spark should stop.
4. Turn off the boiler at the on/off switch.
5. Attach a manometer to the burner pressure test point and turn on the boiler, ensuring gas pressure
is not excessive.
6. Allow the main burner to operate for ten minutes and then check/adjust the burner pressure in
accordance with the figure quoted in the technical data, and record combustion readings.
7. Turn off the appliance and remove the manometer. Ensure that the test point screw is firmly tightened.
8. Check correct operation of the control and limit thermostats, and lockout also the flue spillage limit
thermostat on models G100/30-50IE.
9. Check connections for water tightness.
10. Check effective operation of the flue.
11. Instruct the user on the safe operation of the appliance and the need for regular maintenance.
Hand over operation instructions.
to turn off the boiler
1. FOR SHORT PERIODS
Switch off the on/off switch. This will leave the pilot burner alight on permanent pilot models (towns
gas only) and will obviate the need to carry out the lighting procedure when the boiler is required again.
To operate the appliance again, switch on the on/off switch.
2. FOR LONG PERIODS
Switch off the on/off switch. Turn off the gas supply at the gas isolation valve in the supply pipework
to the boiler.
Switch off the power supply at the local isolator.
Drain boiler during periods of potential frost damage.
To operate the appliance again, follow appropriate comm/testing procedure.
4.0 commissioning
testing

19
REGENCY2
LOW PROFILE
4.1 atmospheric boiler service
& commissioning report
SAMPLE

20
REGENCY2
LOW PROFILE
WARNING: Make sure that the gas supply is always turned OFF at the gas cock, that the electricity
supply is switched off and disconnected before attempting to service appliance. Check for gas soundness
after servicing gas carrying components.
Servicing must be carried out by a qualified Gas Service Engineer and where applicable, a qualified
electrician.
Servicing must be on a regular basis with periods not exceeding 12 months.
•Lift off the boiler front casing panel, which is fastened to the sides by means of snap-on locks,
withdraw it from the limit stops (No. 17. Fig. 5.), lift it out of the bottom hooks (No. 18. Fig. 5.) and
detach it from the sides.
•Loosen the two rear fixing screws which hold the top casing panel, slowly slide it over the side
profiles and remove it.
•Unscrew the wing nuts (No. 19. Fig. 6.) that hold the smokehood cleanout cover and remove it.
•Undo the connection between the connector on the wiring from the gas valve and that from the
lower side of the control panel.
•Loosen the union adaptor (No. 20. Fig. 7.) on the gas train and remove the screws (No. 21. Fig. 7.)
that hold the burner holder plate. Pull out this plate to gain access to the burners.
•Remove the screw (No. 22. Fig. 7.) and detach the burners from the holder plate to be able to clean
them with a brush. Ensure that no dirt remains inside the burners or in the flueways.
•Clean the flueways (No. 23. Fig. 8.) with the brush supplied with the boiler. The brush is hung on the
right-hand hook of the bracket-casing.
•Remove any residue that may have dropped into the combustion chamber. Use a vacuum cleaner
as necessary.
•Examine all parts for signs of wear or damage and replace as necessary, paying particular attention
to hardening of insulation on electrical cables.
•Re-assemble boiler in reverse order of above instructions and carry out comm/test procedure.
•Check effectiveness of flue system and inspect ventilation openings into boiler room ensuring they
are clean and clear.
5.0 boiler
servicing